CN104980043B - The frequency characteristic test and adjusting method of power inverter and the power inverter - Google Patents
The frequency characteristic test and adjusting method of power inverter and the power inverter Download PDFInfo
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- CN104980043B CN104980043B CN201410133523.3A CN201410133523A CN104980043B CN 104980043 B CN104980043 B CN 104980043B CN 201410133523 A CN201410133523 A CN 201410133523A CN 104980043 B CN104980043 B CN 104980043B
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M3/00—Conversion of dc power input into dc power output
- H02M3/02—Conversion of dc power input into dc power output without intermediate conversion into ac
- H02M3/04—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M3/00—Conversion of dc power input into dc power output
- H02M3/02—Conversion of dc power input into dc power output without intermediate conversion into ac
- H02M3/04—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters
- H02M3/08—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes without control electrode or semiconductor devices without control electrode
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M3/00—Conversion of dc power input into dc power output
- H02M3/02—Conversion of dc power input into dc power output without intermediate conversion into ac
- H02M3/04—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters
- H02M3/10—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
- H02M3/145—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal
- H02M3/155—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only
- H02M3/156—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only with automatic control of output voltage or current, e.g. switching regulators
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/40—Testing power supplies
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M1/00—Details of apparatus for conversion
- H02M1/0003—Details of control, feedback or regulation circuits
- H02M1/0025—Arrangements for modifying reference values, feedback values or error values in the control loop of a converter
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Inverter Devices (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Supply And Distribution Of Alternating Current (AREA)
Abstract
The present invention, which provides a kind of power inverter and the frequency characteristic test and adjusting method of the power inverter, the wherein power inverter, includes switching device power cell and the controller for controlling the switching device power cell.Frequency response test and adjustment unit are installed in the controller, so that the power inverter can measure the frequency response curve of itself by frequency response test and adjustment unit, and from main regulation to stable state, test is completed inside power-supply system completely with regulation process, need not be by any external instrument equipment, therefore ensure that system is not invaded and harassed by the external world.In addition, by the frequency characteristic test and adjusting method of power inverter provided by the invention, user can pass through the communication unit interactive information in a host computer and power inverter；Meanwhile user can carry out test and corresponding regulation by frequency response test described in PC control and adjustment unit to the frequency characteristic of power inverter, during again without using any frequency response analyzer.
Description
Technical field
The present invention relates to the technical field of power inverter, is espespecially related to a kind of power inverter and the power inverter
Frequency characteristic test and adjusting method.
Background technology
Power inverter, such as switching power converter, the electricity of various industrial electrical equipments has been widely used in it
In the system of source.In the power supply system, in order to realize total system control accuracy and stability, it is often necessary to power-supply system
Power inverter carry out small-signal modeling and analyze its frequency response characteristic, then frequency response to power inverter is special again
Property carry out appropriate adjustment and compensation so that whole power-supply system can reliably be run in a stable working range.
As shown in the connection diagram of Fig. 1 frequency response analyzers drawn and power-supply system, in order to which measured power converts
The frequency response characteristic of device 11 ', current practice are that a frequency response analyzer 13 ' is connected into the power inverter 11 ' and its
Controller 12 '；Then, a disturbing signal CH1 ' then by frequency response analyzer 13 ' is exported to the controller 12 ' so that should
Controller 12 ' exports the input control signal x for including disturbing signal CH1 ' to power inverter 11 ', and the power conversion
The then one stable state output signal y of corresponding output of device 11 '.
As shown in figure 1, CH2 ' is stable state output signal y voltage division signal.By the frequency for setting disturbing signal CH1 '
Scope, and the input control signal x under each frequency and stable state output signal y are measured respectively, you can utilize frequency response analysis
Instrument 13 ' measures y/x frequency response characteristic.Wherein, stable state output signal y and input control signal x quotient of amplitudes with
The variation characteristic of frequency is the amplitude versus frequency characte of the open loop frequency characteristic of power inverter 11 ', and stable state output signal y is controlled with input
Signal x processed phase angle difference is phase-frequency characteristic with the variation characteristic of frequency.
For some power inverters that are complicated and being difficult to small-signal modeling, frequency response analyzer pair
Played a significant role in the frequency response characteristic analysis of the power inverter.But when the power output grade of power-supply system
When rising to MW levels, frequency response analyzer is upper by instrument limitation in itself has to the disturbing signal that power-supply system is injected
Limit value, therefore the disturbing signal injected in itself can be to be ignored for power-supply system, therefore frequency response analyzer also just loses
Effect is gone.
In addition when being related to multiple power inverter parallel connections, the characteristic of whole power-supply system can also change, originally single
The power inverter of individual stabilization may no longer stablized after parallel connection.Or the power network that is connected by power-supply system or load
Influence so that the power-supply system of script steady operation becomes no longer to stablize, and at this moment may need again by frequency response analyzer
To be tested；However, being limited by the place and other resources that power-supply system is set, frequency of use response analyzer is carried out
Corresponding test will become cumbersome.
The content of the invention
The defects of in order to overcome in the prior art, it is a primary object of the present invention to provide a kind of power inverter and the work(
The frequency characteristic test and adjusting method of rate converter, the power inverter, which includes controller, to be tested and adjusts with frequency response
Unit so that power inverter can measure the frequency response curve of itself by frequency response test and adjustment unit, and independently
Regulation to preset state, during need not be by any external instrument equipment.
Therefore, in order to reach the main object of the present invention, the present invention proposes a kind of power inverter, the power conversion
Device includes switching device power cell and controller, and the controller is used to control the switching device power cell, wherein：
The power inverter also includes detection unit, and it is defeated that the detection unit detects the switching device power cell institute
The voltage/current gone out, and export an at least detection signal；
Frequency response test and adjustment unit are installed, the frequency response test and adjustment unit connect in the controller
Receive the detection signal and the exchange disturbing signal of frequency change can be produced；
The controller is exported to a control signal of the switching device power cell to include and disturbed corresponding to the exchange
Disturbance composition caused by dynamic signal；
The frequency response test and adjustment unit based on the exchange disturbing signal of the multiple different frequency of timesharing with it is right
The detection signal answered and measure the open-Loop characteristic data of the power inverter, and according to measured power inverter
Open-Loop characteristic data, by the frequency dependence parameter adjustment of the power inverter to preset value.
According to a specific embodiment of the power inverter of the present invention, the switching device power cell is single closed power
Converter unit system, the detection unit include a voltage/current signals detection module, detect the switching device power cell
Voltage/current and export a first detection signal to the frequency response test and adjustment unit.
According to a specific embodiment of the power inverter of the present invention, the switching device power cell is two close cycles power
Converter unit system, the detection unit including at least two detection modules detect the switching device power cell and right respectively
A first detection signal and one second detection signal should be exported.
According to a specific embodiment of the power inverter of the present invention, the frequency response test and adjustment unit include：
One exchange disturbing signal generation module, the exchange disturbing signal generation module exchange disturbing signal to produce described one；One
Frequency response test cell, the frequency response test cell timesharing receive the exchange disturbing signal and the corresponding detection
Signal measures the open-Loop characteristic of the power inverter；With an adjustment unit, the adjustment unit is based on the work(
The open-Loop characteristic of rate converter adjusts the frequency phase that the frequency response test cell compensates the power inverter
Related parameter is to preset value.
According to a specific embodiment of the power inverter of the present invention, the frequency response test cell includes a compensator
Module, a signal combiner and an impulse generator, wherein, the compensator module receives the detection signal and exports one and mends
Repay signal；The signal combiner receives the thermal compensation signal and exports a mixed signal to the arteries and veins with the disturbing signal that exchanges
Rush generator；The impulse generator receives the mixed signal and exports the control signal to the switching device power list
Member.
According to a specific embodiment of the power inverter of the present invention, the frequency response test cell includes a compensator
Module, a signal combiner and an impulse generator, wherein, the compensator module includes outer shroud compensator and compensated with inner ring
Device.
According to a specific embodiment of the power inverter of the present invention, the outer shroud compensator and the inner-loop compensator it
Between be additionally provided with a selection control unit, the outer shroud compensator and inner-loop compensator by it is described selection control unit connect.
According to a specific embodiment of the power inverter of the present invention, the adjustment unit is based on the power inverter
The relevant parameter that open-Loop characteristic adjusts the compensator module is joined with compensating the frequency dependence of the power inverter
Count to preset value.
According to a specific embodiment of the power inverter of the present invention, the frequency response test cell also includes test number
According to processing module, the testing data processing module obtains the mixed signal and the compensation corresponding with the mixed signal
Signal of change obtains gain and the phase that disturbing signal lower switch device power unit is exchanged under the frequency.
According to the present invention power inverter a specific embodiment, the adjustment unit include an autonomous adjustment module with
One storage module, wherein, the storage module store power inverter frequency dependence parameter to be adjusted preset value,
The configuration information of the open-Loop characteristic of the power inverter and the frequency response test cell；It is described from main regulation
Module adjusts the frequency response test cell.
According to a specific embodiment of the power inverter of the present invention, the frequency dependence parameter of the power inverter includes
Target cut-off frequency, target Phase margin scope and target amplitude nargin scope.
According to a specific embodiment of the power inverter of the present invention, the controller also includes a communication unit, described
Communication unit communicates with the frequency response test and adjustment unit.
According to a specific embodiment of the power inverter of the present invention, the power inverter also includes a host computer, institute
State host computer and information exchange is realized by excessively described communication unit and the frequency response test and adjustment unit.
Also, in order to reach the main object of the present invention, the present inventor proposes a kind of power inverter simultaneously
Frequency characteristic test and its adjusting method, it comprises the following steps：
A power inverter is provided, the power inverter includes switching device power cell and controller, the control
Device is mounted with frequency response test and adjustment unit and communication unit；
A host computer is provided, the host computer is communicated by communication unit with the frequency response test and adjustment unit；
User is by frequency response test described in the PC control and adjustment unit to the switching device power list
Member carries out open-Loop characteristic test；
User makes the frequency of the frequency response test and adjustment unit to the power inverter by the host computer
Relevant parameter is adjusted.
According to the frequency characteristic test of power inverter and its a specific embodiment of adjusting method of the present invention, in user
Open loop frequency is carried out to the switching device power cell by frequency response test described in the PC control and adjustment unit
When rate characteristic curve is tested, the voltage/current of the switching device power cell need to be detected by a detection unit, and export
An at least detection signal is to the frequency response test and adjustment unit.
According to the frequency characteristic test of power inverter and its a specific embodiment of adjusting method of the present invention, the frequency
Rate response test is provided with adjustment unit exchanges disturbing signal generation module and frequency response test cell；The exchange disturbance
Signal generator module produces exchange disturbing signal and exported to frequency response test cell and surveyed for the frequency response test cell
The open-Loop characteristic of device power unit is closed in runin.
According to the frequency characteristic test of power inverter and its a specific embodiment of adjusting method of the present invention, the frequency
Rate response test and adjustment unit are provided with adjustment unit；The frequency response test cell is provided with compensator module；It is described
Adjustment unit adjusts the compensator module and the frequency dependence parameter of the power inverter is adjusted.
According to the frequency characteristic test of power inverter and its a specific embodiment of adjusting method of the present invention, the tune
Whole unit is provided with storage module, and the storage module is set for storing user to the advance of frequency dependence parameter of power inverter
Put value, the open-Loop characteristic of the switching device power cell and the compensator module current configuration information and described
The collocation method of compensator module.
According to the frequency characteristic test of power inverter and its a specific embodiment of adjusting method of the present invention, the tune
The open-Loop characteristic that whole unit is tested out according to the frequency response test cell adjusts the compensator module extremely
The frequency dependence parameter of the power inverter meets preset value.
According to the frequency characteristic test of power inverter and its a specific embodiment of adjusting method of the present invention, the frequency
Rate response test unit is provided with testing data processing module, and the testing data processing module exchanges according to different frequency
Disturbing signal calculates the open-Loop characteristic for obtaining switching device power cell.
Compared to prior art, technology of the invention has advantages below：
1. power inverter proposed by the invention is applied to for example with the server power supply of LLC circuits or using three electricity
All kinds of power-supply systems such as the charge power supply on horizontal line road, be configured with inside the power inverter controller and frequency response test and
Adjustment unit so that it is bent that the power inverter can measure the frequency response of itself by frequency response test and adjustment unit
Line, and from main regulation to stable state, test is completed inside power-supply system completely with regulation process, it is not necessary to by any
External instrument equipment.
2. in addition, by the frequency characteristic test and adjusting method of power inverter provided by the invention, user can pass through
One host computer and the communication unit interactive information in power inverter；When frequency response test and adjustment unit obtain power conversion
The open loop characteristic curve data can be sent into host computer by communication unit after the open loop characteristic curve data of device to show so that behaviour
The engineering staff (user) for making the host computer can be according to shown open-Loop characteristic data, while engineering staff can
The frequency dependence parameter that single pair power inverter is tested and adjusted by frequency response is adjusted.Or can also be by power
The frequency dependence parameter of converter is pre-stored within frequency response test and adjustment unit so that frequency response is tested and adjustment
Unit is voluntarily adjusted the frequency dependence parameter of power inverter to pre- according to the open-Loop characteristic of power inverter
If value.
Brief description of the drawings
Configurations and embodiments are described in detail referring to following accompanying drawing, wherein referring to identical group with identical reference
Part.
Fig. 1 is the connection diagram of existing frequency response analyzer and power-supply system；
Fig. 2 is a kind of Organization Chart of power inverter of the present invention；
Fig. 3 is the Organization Chart of power inverter of the present invention；
Fig. 4 is a kind of another embodiment Organization Chart of power inverter of the present invention；
Fig. 5 is another embodiment Organization Chart of power inverter of the present invention；
Fig. 6 is the Organization Chart of the frequency response test cell in power inverter；
Fig. 7 A are the Organization Chart of the compensator module and detection unit in power inverter；
Fig. 7 B are the Organization Chart of the compensator module and detection unit in power inverter；
Fig. 8 is the Organization Chart of frequency response test and the adjustment unit in adjustment unit；
Fig. 9 A are a kind of adjustment mode diagram of compensator module；
Fig. 9 B are another adjustment mode diagram of compensator module；
Fig. 9 C are another adjustment mode diagram of compensator module；
Figure 10 is the connection configuration diagram of host computer, communication unit and adjustment unit and testing data processing module；
Figure 11 is a kind of frequency characteristic test of power inverter and the method flow diagram of adjusting method of the present invention；
Figure 12 be the present invention a kind of power inverter frequency characteristic test and adjusting method another embodiment side
Method flow chart.
Wherein, description of reference numerals is as follows：
11 '-power inverter；12 '-controller；
13 '-frequency response analyzer；CH1 '-disturbing signal；
X- inputs control signal；Y- stable state output signals；
The voltage division signal of CH2 '-stable state output signal；
11- switching device power cells；12- pacifies controller；
13- detection units；Vin- input voltage signals；
14- frequency responses test and adjustment unit；Vout- output voltage signals；
141- exchanges disturbing signal generation module；143- adjustment units；
142- frequency response test cells；1421- compensator modules；
1422- signal combiners；1423- impulse generators；
Scomp- thermal compensation signal； SOSC- exchange disturbing signal；
SMIX- mixed signal； SCON- control signal；
SI/V- voltage/current signals； Sdec- detection signal；
131- first detection modules；The detection modules of 132- second；
Sdec1- first detection signal； Sdec2- the second detection signal；
1425- outer shroud compensators；1426- inner-loop compensators；
1427- selects control unit；The autonomous adjustment modules of 1431-；
1432- storage modules；1424- testing data processing modules；
15- communication units；2- host computers；
Embodiment
The frequency characteristic of a kind of power inverter and the power inverter of the present invention is specifically described below with reference to accompanying drawing
Test and multiple embodiments of adjusting method.As clearly stated, one during the details of multiple embodiments will be described below
And illustrate.It should be appreciated, however, that the details of these embodiments should not be used to the limitation present invention.
The power inverter of the present invention is applied to all kinds of power-supply systems, for example with the server power system of LLC circuits
Or the charge power supply system using three level circuits.Fig. 2 is refer to, for an embodiment framework of the power inverter of the present invention
Figure.As shown in Fig. 2 the power inverter includes switching device power cell 11 and for controlling the switching device power cell 11
Controller 12.The switching device power cell 11 receives an input voltage signal Vin from an input source and exports electricity
Press signal Vout.The controller 12 by voltage/current caused by the detection switch device power unit 11 of a detection unit 13 simultaneously
Export an at least detection signal.
In the embodiment of a power inverter provided by the invention, as being provided with frequency response test in figure controller 12
With adjustment unit 14.The frequency response test and adjustment unit 14 receive the detection signal that detection unit 13 is exported and can produced
The exchange disturbing signal of one frequency change so that the controller 12 is exported to a control signal of the switching device power cell 11
Comprising disturbing composition corresponding to caused by the exchange disturbing signal.It is multiple that frequency response test and adjustment unit 14 can be based on timesharing
The exchange disturbing signal of different frequency measures the open-Loop characteristic of the power inverter with corresponding detection signal
Data.Frequency response test and adjustment unit 14 and according to measured power inverter open-Loop characteristic data and incite somebody to action
The frequency dependence parameter adjustment of the power inverter is to preset value so that power inverter can be according to different input source or defeated
Output load and from main regulation to stable output state.
Referring to Fig. 3, wherein, frequency response test and adjustment unit 14 include one exchange disturbing signal generation module 141,
One frequency response test cell 142 and an adjustment unit 143.The exchange disturbing signal generation module 141 can timesharing generation frequency
The exchange disturbing signal of change.The exchange disturbing signal of frequency change can the ascending change of frequency or descending change
Or it is other patterns.The exchange disturbing signal generation module 141 is the exchange disturbing signal generation module of numeric type, therefore should
The pattern for exchanging amplitude, frequency or the frequency change of disturbing signal can be done by user of service according to the relevant parameter of power inverter
Adaptability is set and adjustment.The timesharing of exchange disturbing signal generation module 141 produces the exchange disturbing signal of different frequency.Detection
Voltage/current caused by corresponding power inverter under the exchange disturbing signal of the timesharing of unit 13 detection different frequency, and will inspection
Signal output is surveyed to frequency response test cell 142.The frequency response test cell 142 receives the exchange disturbing signal and correspondingly
The detection signal of disturbing signal is exchanged under the frequency, a point in the power inverter switching frequency characteristics curve can be measured.
So, the open loop frequency of the power inverter can be obtained by the exchange disturbing signal and corresponding detection signal of different frequency
Characteristic curve.
Referring to Fig. 4, for another embodiment Organization Chart of power inverter of the present invention.In the framework of power inverter of the present invention
In, the controller 12 can also include a communication unit 15, and the communication unit 15 leads to the frequency response test and adjustment unit
Letter.Also, frequency response test as shown in Figure 5 and the framework of adjustment unit 14, communication unit 15 and frequency response test and
The frequency response test cell 142 and adjustment unit 143 of adjustment unit 14 are communicated.Matchingly, to cause in controller
Information visualization and be easy to staff to control the power inverter, the power inverter also includes a host computer 2, and this is upper
Machine 2 is communicated by communication unit 15 with frequency response test cell 142 and adjustment unit 143.Staff can be by upper
The position initiation culture response test unit 142 of machine 2 carries out the test of open-Loop characteristic to power inverter, also can be by upper
Position machine 2 is communicated with adjustment unit 143, and frequency response response unit is adjusted based on power inverter current switch frequency characteristic
142 compensate the power inverter.
The embodiment of the 142 1 specific framework of frequency response test cell is as shown in Figure 6.The frequency response test cell
142, which include a compensator module 1421, a signal combiner 1422, an impulse generator 1423 and a test data, is handled
Module 1424.Wherein, the compensator module 1421 receives the detection signal and exports a thermal compensation signal Scomp, and the signal combines
Device 1422 receives thermal compensation signal ScompDisturbing signal S is exchanged with thisoscAnd export a mixed signal SMIXTo the impulse generator
1423；The impulse generator 1423 receives mixed signal SMIXAnd export control signal SconTo the switching device power cell
11。
The concrete configuration mode of the compensator module 1421 and detection unit 13 according to different types of power inverter and
It is different.If the power inverter is single closed power converter, compensating module 1421 is then a compensator, such as Fig. 7 A institutes
Show.The detection unit 13 is a voltage/current signals detection module, detects the voltage/current of the switching device power cell 11
Signal SI/V simultaneously exports a detection signal SdecTo the compensator.Framework based on Fig. 3, Fig. 6 and Fig. 7 A understands opening for whole loop
Ring transmission function
Scomp/SMIX=Gplant*Gcomp*Gpulse（1）
Wherein, GplantFor the transmission function of switching device power cell 11；GcompFor compensator transfer；GpulseFor arteries and veins
The transmission function of generator 1423 is rushed, it is emphasized that this formula（1）In ScompAnd SMIXDisturbing signal frequency is exchanged to be corresponding
Under fundametal compoment data.Due to the transmission function G of compensatorcomp, it is known that it therefore can easily calculate switching device power list
The uncompensated open-loop transfer function G of power inverter corresponding to member 11plant*Gpulse.The open-loop transfer function of the power inverter
Reality is by measuring corresponding (S under each frequencycomp/SMIX) gain and phase obtain.
If the power inverter is two close cycles power inverter, the embodiment of concrete structure one of compensating module 1421 can be such as figure
Shown in 7B.As shown in Figure 7 B, compensator module 1421 includes inner-loop compensator 1426 and outer shroud compensator 1425.Accordingly, examine
Survey unit 13 and then detect the switching device power cell 11 respectively and corresponding defeated including at least two detection modules (131,132)
Go out a first detection signal Sdec1With one second detection signal Sdec2.First detection signal Sdec1It is correspondingly outputting to outer shroud compensator
1425, the second detection signal Sdec2It is correspondingly outputting to inner-loop compensator 1426.Wherein, compensator module 1421 has further included one
Control unit 1427 is selected, is arranged between outer shroud compensator 1425 and inner-loop compensator 1426.When selection control unit 1427
During disconnection, the inner ring frequency characteristic of the power inverter can be tested.Its test inner ring frequency characteristic operation principle with
The open-loop transfer function test philosophy of foregoing description list closed power converter is identical, therefore does not remake excessive repeatability description.
When selecting control unit 1427 to close, input is disconnected to the second detection signal S of inner-loop compensator 1426dec2, can now obtain
Scomp/SMIX=Gplant*Gcomp1*Gin_CL*Gpulse（2）
The outer shroud open-loop transfer function of work(parallel operation is Gcomp1*Gin_CL*Gpulse, wherein Gcomp1For inner-loop compensator 1426
Transmission function.By the thermal compensation signal S gathered under each frequencycompWith mixed signal SMIXData, and to thermal compensation signal Scomp
With carrying out Fourier decomposition, mixed signal S is tried to achieve respectivelyMIXWith thermal compensation signal ScompFundametal compoment amplitude and phase,
It can obtain S corresponding to different frequency exchange disturbing signalcomp/SMIXGain and phase.
Therefore, the description based on more than to frequency response test cell, actually may be used for the power inverter of single closed loop
To pass through formula（1）Calculating obtain single closed loop power inverter amplitude frequency curve and phase frequency curve.For the work(of two close cycles
Rate converter can essentially pass through formula（1）Obtain the amplitude frequency curve and phase frequency curve and internal benefit of the inner ring of power inverter
The transmission function of device is repaid, and passes through formula（2）Then can record power converter outer shroud amplitude frequency curve and phase frequency curve.Referring to
Organization Chart shown in Fig. 8, the testing data processing module 1424, for mixed signal SMIXIt is corresponding with the mixed signal
Thermal compensation signal Scomp, data processing as described above, such as Fourier decomposition are carried out, calculates the fundametal compoment in two signals
Amplitude and phase, and then obtain the exchange disturbing signal S of corresponding each frequencyoscPower inverter open loop frequency characteristic
Curve (i.e. amplitude frequency curve and phase frequency curve).
Wherein, as shown in figure 8, the adjustment unit 143 includes an autonomous storage module 1432 of adjustment module 1431 and one.Should
Storage module 1432 stores the preset value of power inverter frequency dependence parameter to be adjusted, such as default target cutoff frequency
Rate, target Phase margin scope and target amplitude nargin scope.In addition, the power that the testing data processing module 1424 is obtained
The open-Loop characteristic (i.e. amplitude frequency curve and phase frequency curve) of converter can be stored in the storage module 1432.Or
In the storage module in other embodiment, the storage module is stored with the history adjustment posterior infromation of the power inverter, convenient
Staff can adjust posterior infromation according to history, quickly by the frequency dependence parameter adjustment of power inverter to desired value.This
Outside, in the embodiment of some power inverters, the history adjustment posterior infromation of the power inverter, compensator mould is particularly related to
The relevant parameter of block 1421 and the empirical method of regulation, such as the position of the zero pole point of compensator module 1421, current phase angle
The parameter such as nargin and magnitude margin, and current expiration frequency is less than normal or the side such as the zero pole point how is moved when Phase margin is inadequate
Method.
The frequency dependence parameter to be adjusted that autonomous adjustment module 1431 can prestore according to storage module 1432 is to frequency
Compensating module 1421 is adjusted in rate response test unit 142, compensate the power converter frequency dependence parameter meet to
The value of the frequency dependence parameter setting prestored in storage module 1432.
It is illustrated below using power inverter as one with voltage-dropping type (buck) power supply changeover device.The step down supplies
Controller is provided with frequency response test and the adjustment unit being performed as described above described in example in converter.Wherein, frequency response is tested
Unit can test the open loop characteristic curve of step-down power converter as shown in Figure 9 A.And the transmission function of compensating module 1421 and
Regulating allocation method can be pre-stored within storage module.For example, compensating module 1421 is a single compensator, and the compensator
Transmission function GcompIt is represented by following equation：
In above-mentioned formula（3）In, K is the gain of compensator, and fz1, fz2, fp1 and fp2 are respectively two of the compensator
Zero point and two limits.Then, as shown in Figure 9 B, warp of the autonomous adjustment module according to the compensator regulation stored by storage module
Proved recipe method and it is pre-defined choose fz1=fz2=fo, fp1=fzc and fp2=(5-10) fcv, wherein, fcv is target cutoff frequency
Rate.Before not compensating, shown in solid in the open loop characteristic curve such as Fig. 9 C of the buck circuits measured, current expiration frequency fcv ' is more than
Target cut-off frequency fcv.The gain K of compensator is reduced, by compensator regulation and then the width of the secondary buck circuits measured
For frequency curve as shown in the dotted line in Fig. 9 C, current expiration frequency fcv ', which has diminished to, meets target cut-off frequency fcv.In addition,
It can certainly also can reach identical effect by changing compensator zero point fz1 and fz2 positions, specifically repeat no more.
In addition to the embodiment of the power inverter listed above in the present invention, another aspect of the present invention provides power
A kind of frequency characteristic test and its adjusting method of converter.The frequency characteristic test and its adjusting method are based on herein below institute
The power inverter of introduction.A power inverter is provided, referring to Fig. 4, the power inverter includes switching device power cell 11
With controller 12, the controller 12 is mounted with frequency response test and adjustment unit 14 and communication unit 15；One host computer is provided
2, the host computer 2 is communicated by communication unit 15 with the frequency response test and adjustment unit 14.User is controlled by the host computer 2
Make the frequency response test and adjustment unit 14 and open-Loop characteristic test is carried out to the switching device power cell 11.With
Family makes the frequency response test and adjustment unit 14 adjust the frequency dependence parameter of the power inverter by the host computer 2
It is whole.Certainly, the switching device power cell 11 also includes detection unit 13, detection unit detection switch device power unit 11
Relevant parameter is simultaneously sent to frequency response test and adjustment unit 14.On frequency response test and adjustment unit in controller 12
14th, communication unit 15 and host computer etc. and annexation between them in the embodiment of said apparatus it has been described that, because
This does not do repeated description herein.
What is be exemplified below is to be illustrated how using described above one specific power transducer device to power inverter
Realize frequency dependence parameter testing and adjust automatically.The frequency dependence parameter can be magnitude margin, Phase margin, cut-off frequency
Etc. parameter.Enumerating a power inverter first can be adjusted automatically according to the frequency dependence parameter stored in controller, referring to
Figure 11.Start the frequency response test loaded in controller and adjustment unit first, carry out switching frequency characteristics test, and judge
Whether switching frequency characteristics data handle completion, when not completed, may proceed to wait, when having completed at switching frequency characteristics data
Reason, the configuration parameter of the frequency dependence parameter stored in storage module and current compensator now can be read in adjustment unit, and sentences
Whether the configuration parameter of disconnected current compensator needs to adjust.If the configuration parameter of compensator need not adjust, it can now terminate work(
The adjustment process of rate converter frequency parameter；The weight of parameter can be carried out to compensator if the configuration parameter of compensator needs to adjust
New configuration and adjustment.It can refer to be stored in storage module when the parameter of compensator being reconfigured and adjusted again certainly and mend
Repay the experience adjusting method of device.After being readjusted to compensator, this frequency response test cell can be utilized to power conversion again
The open-Loop characteristic of device is retested, judge power inverter frequency dependence parameter whether meet it is currently stored
Frequency dependence parameter, the experience adjusting method if the compensator if being unsatisfactory at this in memory module is adjusted, then
The secondary open-Loop characteristic for carrying out measured power converter is until the frequency dependence parameter of power inverter meets storage mould
The frequency of the power inverter of block storage terminates adjustment process from the desired value of relevant parameter.
Here, matching somebody with somebody for a zero pole point selected using the embodiment of power inverter described above according to user is enumerated again
Mode and position are put, compensator is designed, until meeting the requirement of user, as shown in figure 12.First, adjustment unit passes through
Communication unit receives target cut-off frequency fc, Phase margin PM scope and the magnitude margin GM scope that host computer is sent, with
And configuration mode and the position of zero pole point.Adjustment unit contrast original is stored in target information and compensated information in storage module, sentences
Whether the relatively former storage information of the target information and compensated information that disconnecting is received has adjustment, if not adjusting, does not make any processing；
If information has adjustment, compensator is adjusted.After device to be compensated is adjusted, initiation culture response test unit, then
Test data processing is waited, if test data processing is completed, confirms whether the compensator after adjustment meets to require；If test number
Host computer is fed back to according to still in processes, then waiting test data to handle and send.Whether judge the compensator after adjustment
Meet to require, in spite of requirement is met, all send and feed back to host computer accordingly, wait the further behaviour of host computer
Make.
The test of the associated frequency parameter of power inverter and method of adjustment are not limited to two ways listed above, user
, actually can be very flexibly according to different demands to the power inverter based on the embodiment of power inverter described above
Carry out the test and/or adjustment of correlated frequency.The frequency response test and adjustment unit are mounted in controller.It is generally this
Controller is dsp chip, then frequency response test and adjustment unit flexibly can be embedded in such a chip.The frequency response is tested
The clumsy frequency response analyzer of tradition is may replace with adjustment unit, simplifies the test of the associated frequency parameter of power inverter,
Also legacy frequencies response analyzer test process is eliminated to be limited by actual physics or field test condition.
Although the present invention is disclosed above with embodiment, so it is not limited to the present invention, any to be familiar with this skill
Person, without departing from the spirit and scope of the invention, when can make various variation and retouching, therefore protection scope of the present invention is worked as
It is defined depending on appended invention protection domain institute defender.
Claims (16)
1. a kind of power inverter, the power inverter includes switching device power cell and controller, and the controller is used
In the control switching device power cell, it is characterised in that：
The power inverter also includes detection unit, and the detection unit detects what the switching device power cell was exported
Voltage/current, and export an at least detection signal；
Frequency response test and adjustment unit are installed, the frequency response test and adjustment unit receive institute in the controller
State detection signal and the exchange disturbing signal of frequency change can be produced；
The controller, which exports to a control signal of the switching device power cell to include, corresponds to the exchange disturbance letter
Composition is disturbed caused by number；
The frequency response test and adjustment unit based on the exchange disturbing signal of the multiple different frequency of timesharing with it is corresponding
Detection signal and the open-Loop characteristic data for measuring the power inverter, and opening according to measured power inverter
Ring frequency characteristic data, by the frequency dependence parameter adjustment of the power inverter to preset value；
Wherein, the frequency response test and adjustment unit include：
One exchange disturbing signal generation module, the exchange disturbing signal generation module are believed to produce the exchange disturbance
Number；
One frequency response test cell, the frequency response test cell timesharing receive the exchange disturbing signal and corresponding institute
State the open-Loop characteristic that detection signal measures the power inverter；With
One adjustment unit, open-Loop characteristic of the adjustment unit based on the power inverter adjust the frequency and rung
Test cell is answered to compensate the frequency dependence parameter of the power inverter to preset value；And
The frequency response test cell includes a compensator module, a signal combiner and an impulse generator, wherein, it is described
Compensator module receives the detection signal and exports a thermal compensation signal；The signal combiner receives the thermal compensation signal and institute
State exchange disturbing signal and export a mixed signal to the impulse generator；The impulse generator receives the mixed signal simultaneously
The control signal is exported to the switching device power cell.
2. power inverter as claimed in claim 1, it is characterised in that the switching device power cell is single closed power
Converter unit system, the detection unit include a voltage/current signals detection module, detect the switching device power cell
Voltage/current and export a first detection signal to the frequency response test and adjustment unit.
3. power inverter as claimed in claim 1, it is characterised in that the switching device power cell is two close cycles power
Converter unit system, the detection unit including at least two detection modules detect the switching device power cell and right respectively
A first detection signal and one second detection signal should be exported.
4. power inverter as claimed in claim 1, it is characterised in that the compensator module include outer shroud compensator with it is interior
Ring compensator.
5. power inverter as claimed in claim 4, it is characterised in that the outer shroud compensator and the inner-loop compensator it
Between be additionally provided with a selection control unit, the outer shroud compensator and inner-loop compensator by it is described selection control unit connect.
6. power inverter as claimed in claim 1, it is characterised in that the adjustment unit is based on the power inverter
The relevant parameter that open-Loop characteristic adjusts the compensator module is joined with compensating the frequency dependence of the power inverter
Count to preset value.
7. power inverter as claimed in claim 1, it is characterised in that the frequency response test cell also includes test number
According to processing module, the testing data processing module obtains the mixed signal and the compensation corresponding with the mixed signal
Signal of change obtains gain and the phase that disturbing signal lower switch device power unit is exchanged under the frequency.
8. power inverter as claimed in claim 1, it is characterised in that the adjustment unit include an autonomous adjustment module with
One storage module, wherein, the storage module store power inverter frequency dependence parameter to be adjusted preset value,
The configuration information of the open-Loop characteristic of the power inverter and the frequency response test cell；It is described from main regulation
Module adjusts the frequency response test cell.
9. power inverter as claimed in claim 1, it is characterised in that the frequency dependence parameter of the power inverter includes
Target cut-off frequency, target Phase margin scope and target amplitude nargin scope.
10. power inverter as claimed in claim 1, it is characterised in that the controller also includes a communication unit, described
Communication unit communicates with the frequency response test and adjustment unit.
11. power inverter as claimed in claim 10, it is characterised in that the power inverter also includes a host computer,
The host computer realizes information exchange by the communication unit and the frequency response test and adjustment unit.
12. the frequency characteristic test and its adjusting method of a kind of power inverter, it is characterised in that：
A power inverter is provided, the power inverter includes switching device power cell and controller, the controller dress
It is loaded with frequency response test and adjustment unit and communication unit；
A host computer is provided, the host computer is communicated by communication unit with the frequency response test and adjustment unit；
User is entered by frequency response test described in the PC control and adjustment unit to the switching device power cell
Row open-Loop characteristic is tested；
User makes the frequency dependence of the frequency response test and adjustment unit to the power inverter by the host computer
Parameter is adjusted；
The frequency response test is provided with adjustment unit exchanges disturbing signal generation module and frequency response test cell；Institute
State exchange disturbing signal generation module generation exchange disturbing signal and export to frequency response test cell and supply the frequency response
Test cell tests the open-Loop characteristic of switching device power cell；
The frequency response test and adjustment unit are provided with adjustment unit；The frequency response test cell is provided with compensator
Module；The adjustment unit adjusts the compensator module and the frequency dependence parameter of the power inverter is adjusted.
13. the frequency characteristic test and its adjusting method of power inverter as claimed in claim 12, it is characterised in that：
A detection unit is provided, the detection unit detects the voltage/current of the switching device power cell, and exports at least
One detection signal is to the frequency response test and adjustment unit.
14. the frequency characteristic test and its adjusting method of power inverter as claimed in claim 12, it is characterised in that：It is described
Adjustment unit is provided with storage module, and the storage module is used to storing user to the advance of the frequency dependence parameter of power inverter
Arranges value, the open-Loop characteristic of the switching device power cell and the compensator module current configuration information and institute
State the collocation method of compensator module.
15. the frequency characteristic test and its adjusting method of power inverter as claimed in claim 12, it is characterised in that：It is described
The open-Loop characteristic that adjustment unit is tested out according to the frequency response test cell adjusts the compensator module
Frequency dependence parameter to the power inverter meets preset value.
16. the frequency characteristic test and its adjusting method of power inverter as claimed in claim 12, it is characterised in that：It is described
Frequency response test cell is provided with testing data processing module, and the testing data processing module is handed over according to different frequency
Flow disturbance signal of change obtains the open-Loop characteristic of switching device power cell.
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| CN201410133523.3A CN104980043B (en) | 2014-04-03 | 2014-04-03 | The frequency characteristic test and adjusting method of power inverter and the power inverter |
| TW103119315A TWI528689B (en) | 2014-04-03 | 2014-06-04 | Power converter and testing and adjusting method of frequency feature thereof |
| US14/607,552 US9627959B2 (en) | 2014-04-03 | 2015-01-28 | Switch power converter and frequency response characteristic testing and adjusting method thereof |
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| CN201410133523.3A CN104980043B (en) | 2014-04-03 | 2014-04-03 | The frequency characteristic test and adjusting method of power inverter and the power inverter |
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| US10024889B2 (en) * | 2015-12-23 | 2018-07-17 | Intel IP Corporation | Apparatuses, methods, and systems for detection of a current level |
| US10459013B2 (en) * | 2016-06-17 | 2019-10-29 | Analog Devices Global | Apparatus for and method of providing measurements of uncertainty in respect of a transfer function |
| KR101923690B1 (en) * | 2016-11-11 | 2018-11-29 | 엘에스산전 주식회사 | Synthetic test circuit for submodule performance test in a power compensator and testing method thereof |
| DE102018120821A1 (en) * | 2018-08-27 | 2020-02-27 | Infineon Technologies Austria Ag | Determination of the small signal transfer function |
| TWI681274B (en) * | 2018-11-14 | 2020-01-01 | 財團法人工業技術研究院 | Method for adjusting frequency response parameter of machine tool and system using the same |
| CN110333377B (en) * | 2019-06-21 | 2021-04-13 | 深圳市鼎阳科技股份有限公司 | Method for supporting variable amplitude scanning of baud chart and digital oscilloscope |
| WO2023283220A1 (en) * | 2021-07-06 | 2023-01-12 | Texas Instruments Incorporated | Power converter circuit testing |
| CN113904525B (en) * | 2021-08-16 | 2024-05-10 | 中国船舶重工集团公司第七0九研究所 | PWM converter model parameter identification method and system based on frequency response |
| AT525068B1 (en) * | 2021-08-20 | 2022-12-15 | Omicron Electronics Gmbh | Method and device for testing a voltage converter |
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| CN101806833A (en) * | 2010-03-08 | 2010-08-18 | 中国航空工业集团公司西安飞机设计研究所 | Multi-channel frequency response analysis system and method thereof |
| CN102789192A (en) * | 2011-05-17 | 2012-11-21 | 大连光洋科技工程有限公司 | Feedback control system and frequency response measuring device thereof |
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| TW200814499A (en) | 2006-09-01 | 2008-03-16 | Richtek Technology Corp | Switching type power supply and method of determining compensation coefficients |
| CN101802742A (en) * | 2007-09-19 | 2010-08-11 | 富士通株式会社 | Power unit and electronic device |
| US7638959B2 (en) | 2007-12-14 | 2009-12-29 | Hamilton Sundstrand Corporation | Method of operating a brushless motor wherein open loop and closed loop controllers utilize different commutation methods |
| US8278898B2 (en) * | 2009-02-13 | 2012-10-02 | Texas Instruments Incorporated | Auto-tuning power supply |
| CN103475210B (en) * | 2011-09-14 | 2016-04-27 | 矽力杰半导体技术(杭州)有限公司 | A kind of constant time control method of switch type regulator, control circuit and apply its switch type regulator |
| US9184652B2 (en) * | 2012-08-28 | 2015-11-10 | Enphase Energy, Inc. | Method and apparatus for inverter output current harmonic reduction |
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| CN101806833A (en) * | 2010-03-08 | 2010-08-18 | 中国航空工业集团公司西安飞机设计研究所 | Multi-channel frequency response analysis system and method thereof |
| CN102789192A (en) * | 2011-05-17 | 2012-11-21 | 大连光洋科技工程有限公司 | Feedback control system and frequency response measuring device thereof |
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| TW201539953A (en) | 2015-10-16 |
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